Reflections in a Plane Mirror<br />
Reflection in a Plane Mirror<br />
Activity 4.11<br />How Light Reflects<br />
A<br />B<br />
Law of Reflection:<br />When light reflects off a surface, the angle of incidence is always equal to the angle of reflecti...
Looking in a mirror<br />
Looking in a mirror<br />
Looking in a mirror<br />
Object distance vs. Image Distance<br />
Ray Diagrams<br />for reflections in a plane mirror<br />
Step 1<br />Identify the top and the bottom of the object (label these “A” and “B”)<br />
Step 2<br />Draw a line from point A that is perpendicular to the mirror<br />
Step 3<br />Draw an incident ray (starting at point A)<br />Draw a “normal” where the incident ray hits the mirror<br />Us...
Step 4<br />Extend line A to point Ai (equidistant from point A on the other side of the mirror)<br />Connect point Ai to ...
Step 5<br />Repeat steps 2-4 for Point B<br />
Try it!<br />
Activity D8<br />Does a plane mirror reverse Left and Right?<br />
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Reflections in a Plane Mirror

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Transcript of "Reflections in a Plane Mirror"

  1. 1. Reflections in a Plane Mirror<br />
  2. 2. Reflection in a Plane Mirror<br />
  3. 3. Activity 4.11<br />How Light Reflects<br />
  4. 4. A<br />B<br />
  5. 5. Law of Reflection:<br />When light reflects off a surface, the angle of incidence is always equal to the angle of reflection<br />i = r<br />
  6. 6. Looking in a mirror<br />
  7. 7. Looking in a mirror<br />
  8. 8. Looking in a mirror<br />
  9. 9. Object distance vs. Image Distance<br />
  10. 10. Ray Diagrams<br />for reflections in a plane mirror<br />
  11. 11. Step 1<br />Identify the top and the bottom of the object (label these “A” and “B”)<br />
  12. 12. Step 2<br />Draw a line from point A that is perpendicular to the mirror<br />
  13. 13. Step 3<br />Draw an incident ray (starting at point A)<br />Draw a “normal” where the incident ray hits the mirror<br />Use a protractor to draw a reflecting ray<br />(Remember that i = r )<br />
  14. 14. Step 4<br />Extend line A to point Ai (equidistant from point A on the other side of the mirror)<br />Connect point Ai to your reflection ray<br />
  15. 15. Step 5<br />Repeat steps 2-4 for Point B<br />
  16. 16. Try it!<br />
  17. 17. Activity D8<br />Does a plane mirror reverse Left and Right?<br />

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